18c2ecf20Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0
28c2ecf20Sopenharmony_ci/* Helper functions for Thinkpad LED control;
38c2ecf20Sopenharmony_ci * to be included from codec driver
48c2ecf20Sopenharmony_ci */
58c2ecf20Sopenharmony_ci
68c2ecf20Sopenharmony_ci#if IS_ENABLED(CONFIG_THINKPAD_ACPI)
78c2ecf20Sopenharmony_ci
88c2ecf20Sopenharmony_ci#include <linux/acpi.h>
98c2ecf20Sopenharmony_ci#include <linux/leds.h>
108c2ecf20Sopenharmony_ci
118c2ecf20Sopenharmony_cistatic bool is_thinkpad(struct hda_codec *codec)
128c2ecf20Sopenharmony_ci{
138c2ecf20Sopenharmony_ci	return (codec->core.subsystem_id >> 16 == 0x17aa) &&
148c2ecf20Sopenharmony_ci	       (acpi_dev_found("LEN0068") || acpi_dev_found("LEN0268") ||
158c2ecf20Sopenharmony_ci		acpi_dev_found("IBM0068"));
168c2ecf20Sopenharmony_ci}
178c2ecf20Sopenharmony_ci
188c2ecf20Sopenharmony_cistatic void hda_fixup_thinkpad_acpi(struct hda_codec *codec,
198c2ecf20Sopenharmony_ci				    const struct hda_fixup *fix, int action)
208c2ecf20Sopenharmony_ci{
218c2ecf20Sopenharmony_ci	if (action == HDA_FIXUP_ACT_PROBE) {
228c2ecf20Sopenharmony_ci		if (!is_thinkpad(codec))
238c2ecf20Sopenharmony_ci			return;
248c2ecf20Sopenharmony_ci		snd_hda_gen_add_mute_led_cdev(codec, NULL);
258c2ecf20Sopenharmony_ci		snd_hda_gen_add_micmute_led_cdev(codec, NULL);
268c2ecf20Sopenharmony_ci	}
278c2ecf20Sopenharmony_ci}
288c2ecf20Sopenharmony_ci
298c2ecf20Sopenharmony_ci#else /* CONFIG_THINKPAD_ACPI */
308c2ecf20Sopenharmony_ci
318c2ecf20Sopenharmony_cistatic void hda_fixup_thinkpad_acpi(struct hda_codec *codec,
328c2ecf20Sopenharmony_ci				    const struct hda_fixup *fix, int action)
338c2ecf20Sopenharmony_ci{
348c2ecf20Sopenharmony_ci}
358c2ecf20Sopenharmony_ci
368c2ecf20Sopenharmony_ci#endif /* CONFIG_THINKPAD_ACPI */
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